Cowl.



Ta S. GRHVIES.

COWL.

APPLICATION FILED ocT. 2I. I9Is.

1992293941, mem@ Apr. 10, 1917i.

1N;- .vmmls percus co.. How-uma. vusnmcroul n c,

T. S. GRHVIES.

COWL.

APPLICATION FILED OCT. 2i. 1915.

m2312459@ Patented Apr. 10,1917.

2 SHEETS-SHEET?- TI-IADDEUS S. GRIMES, OF COLUMBUS,

GEORGIA, ASSIGNOR TO LUMMUS COTTON GIN COMPANY, OF COLUMBUS, GEORGIA, .A CORPORATION OF GEORGIA.

COWL.

Specification of Letters Patent.

Patented Apr. 10, 191i?.

Application filed ctobe1'21, 1915. Serial No. 57,154.

To all 'whom z't may concern.'

Be it known that I, THADDnUs S. GRIMES, a citizen of the United States, residing at Columbus, in the county of Muscogee and State of Georgia, have invented certain new and useful Improvements in Cowls; and I do hereby declare the following to be a full` clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to cowls for ventilating Hues or the like and, while especially adapted to and intended for use in connection with condenser-s for cottolrginning out- Hts, its utility is obviously not limited to suoli association. The object of the present invention is to provide a cowl which will oH-er the minimum resistance to the passage of the Ventilating current while at the same time providing means for effectually preventing the entry of rain or other extraneous matter into the Hue when the Ventilating current is not flowing.

A. further object of the invention is to provide a. cowl having wings adapted to close over the top of the Hue to form a weather shedding roof, such wings to be opened and maintained in an open condition by the ventilating current passing through the Hue.

A further object of the invention is to provide a housing embracing the wings to shield the sides of the wings or the lines of connection with the Hue top from the weather or extraneous matter.

A further object of the invention is to provide a device of the and with connecting links insuring the operation of the wings in unison.

A further object of the invention is to provide a device of the class wherein the pivoted wings are provided with counter weights reducing the frictional resistance of the wings to the passage of the air.

With these yand other objects in viewthe invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawings:

Figure 1 is a vertical transverse sectional view of the improved cowl, showing the kind having wings y pivoted to and hinged upon horizontal axes wing closures in closed position in full lines and in open position in dotted lines.

Fig. 2 is a perspective view of the top or upper end of the Hue with the wing closures mounted thereon and the housing removed.

Fig. 3 is a perspective view of the assenr bled cowl, showing the wing closures o' F ig. d is a horizontal section taken on line 4-4 of Figs. 1 and 3 with the closure wings open.

Like characters of reference designate corresponding parts throughout the several views.

T he improved cowl which forms the subject matter ot' this application is adapted to be used in conjunction with Ventilating Hue 10, employed for any ordinary purpose, but illustrated and more especially adapted for use in conjunction with a condenser at a cotton-ginning plant.V In a condenser it is well known that a strong blast of air is forced through the condenser to form the hat against a. rotating screen `and that the air thus forced through the condenser passes out through some outlet, carrying with it dust and other extraneous matter. It is desirable that the outlet from the condenser he a short vertical Hue and it is necessary to protect the condenser tion of moisture from customary to employ upon the tops of such Hues cowls of various types for the purpose mentioned, but it has always been found that any cowl which will adequately prevent the introduction of rain or other storm moisture to the Hue also oHers a very considerable resistance to the passage of the air.

In the present cowl two sides of the Hue sheets are carried up to form gables 11 and the upper end of such Hue is surrounded by a frame 12 spaced away from the Hue sheet-s on all sides. The frame 12 is supported upon the Hue top in any .approved manner, a usual and ordinary means being shown by providing the Hue with a frame 13 and having braces 14 extending from the frame 13 to the frame 12.

Mounted in certain of the braces 14C are wing closures 15 pivoted at 17, so that the said closures can occupy the position shown in either full or dotted line in Fig. 1, in the former case bearing substantially on the gables 11 of the Hue and, in the latter case,

against thev introducstorms. It has been standing in very nearly vertical planes, bearing against the sides of the housing 16. It will be noted that the dotted line position of the wings 15 is not exactly vertical, but so inclined that when the blast of air by which the wings are raised ceases, the weight of the wings themselves, by their own gravity, return from dotted line position to full line position. The wings are provided with lips 18 so that no matter which wing falls first, the second wing to fall will lap over the first wing and form a joint which will exclude water coming down substantially vertically. The housing 16 above referred to is so positioned that any storm water which enters the top of the structure must fall in nearly a vertical direction and will fall upon the tops of the closure wings 15 and, by such wings, be guided over the eaves to fall outside of the flue 10.

It will be noted that the housing 16 has its sides inclined so that the opening of the top is of substantially the same area as the top opening of the iiue and yet providing egress for the water of the storms about the sides of the flue. The formation of the housing with the top opening of substantially the same area as the iiue oiiers little or no resistance to the passage of air after the wings have been opened by the initial blast; as the wings assume almost a vertical position, the resistance to the air necessary to maintain such wings in such open position during operation is almost negligible. It will be understood, of course, that when the device is in operation the passage of the vblast current from the structure will prevent any water from a storm entering the flue and that instantaneously upon the interruption of the passage of the air the closure will entirely close the top of the flue to prevent damage from storm.

To further reduce the frictional resistance to the air the wings 15 are provided with counter weights 19 secured thereto in any approved manner as by the bars 20. Also to insure the action of the wings 15 in uni- Copies of this patent may 'be obtained for ve cents each, by addressing the son the said wings are connected by means of a linlr 21 connected to crank arms 22 extending upwardly above the wing upon one side, and 23 extending downwardly below the wing upon the opposite side.

I claim:

1. A cowl comprising in combination a flue, valve members positioned to close the top of the flue and to swing open to a substantially vertical position, and a housing surrounding the upper end of the flue and the valve, presenting an opening in the top approximating the opening in the iiue and serving to limit the opening movement of the valve.

2. A cowl comprising in combination a flue, leaf valves pivoted adjacent the outer edges of the iue and closing at substantially a central line of the flue and adapted to swing open upwardlyl to approximately a vertical position, and a housing surrounding the upper end of the flue and the valves and presenting an opening approximating the area of and in substantial registry with the flue, and serving to limit the open-movement of the leaves.

3. A cowl comprising in combination a flue, a housing` surrounding the upper end of the flue and having an upper opening approximating in area and registering with the opening of the iue, and-valve members hinged without Vthe area of the ue and adapted to open wholly within the housing.

l. A cowl comprising in combination a flue, a. housing surrounding and spaced away from the upper end of the Hue and contracted inwardly to provide an opening approximating the area of and in registry with the iiue, and valve members hinged within the housing and without the area of the -iue and adapted to swing open upwardly into engagement with the housing.

In testimony whereof I aiiix my signature in presence of two witnesses. A

THADDEUS S. GRIMES.

y Witnesses:

J. F. RAY, SAM EMRICH.

Commissioner of Patents,

Washington, D. C. 

